Does M2 slot at Acer Aspire V5-591G-753S support PCIe x4 or just SATA 3?

Saharok

Hello
I bought Acer Aspire V5-591G-753S and wants to install ssd in M2 slot. Does it support PCIe x4 or just SATA 3? I'll appreciate your help

brummyfan2

Hi,
You need to install HWiNFO64 program and check whether you have a unused PCIe Root Port with Maximum Link width of 2x or 4x, please read this thread for more information:https://community.acer.com/en/discussion/494853/acer-aspire-v5-591g-ssd-m-2-upgrade-choices

Saharok

Could you say for noobs where I should look?
I attached link to the screenshot
https://i.paste.pics/a131d02bd54c2447252aa467f6b21e1f.png

brummyfan2

Hi,
You have two PCI Express Root Ports, one is used by Realtek and the other is by Atheros, as you don't have a spare Root port available, you can use only a SATA M.2 SSD.
Maximum Link Width value for a spare Port has to be either x2 or x4  for the NVMe SSD to work.

Saharok

As I assumed "maximum link width=x1" doesn't allow me to install PCIe x4? :s :s :s

brummyfan2

Unfortunately, you don't have a spare Root port as well 

tteksystems

I mean, it's not the fault of the OP for not having a spare root port. This is ACER's fault. It's not like they engineered this laptop to even makes it possible to have a spare root port. Realtek and Atheros are not going anywhere. They are part of the system and have to remain. So why is ACER pushing top of the line Predator laptops with inadequate support for technology that other companies have been supporting for the past 2 years? A real disappointment. Acer built a costly paperweight as far as I am concerned. Those wanting to take advantage of the current NVMe SSD technology are just SOL with ACER but sometimes pay even more for a Predator than better, more capable gaming laptops. The other top names in gaming laptops are not skimping on this. A PCIe x 4 slot should be a given specification at this level for a gaming laptop. FGS, Predator is Acer's top of the line gaming machine and they do not come cheap.  A BIOS update reallocating resources should never be the answer to having the ability to take advantage of PCIe x 4. It's almost 2018 already and they are still building so called top of the line gaming systems using specs from 3-4 years ago. Any decent gaming system will not strip you of the ability to utilize an NVMe SSD. A real disappointment

kushwavez

It's a little bit late I know but for anyone watching this in 2020: I have NVMe SSD (KINGSTON A2000) installed & working on my Acer Aspire V5-591G-55TU. Read speed is about 2000 MB/s with this specific card, at HWinfo64 I see the port with PCI-E x4, drive detected as PCI-e SSD

H4KUO

Hi. For everyone thinking about upgrading your Acer V5-591g with a Nvme pcie 3.0 x4, here is my experience.

I'm running Windows 10 on the Pny CS3030 in Bus link width x4 and I get an average "As SSD" benchmark reading of r/w 1500 mb/s. So its probably throttled but still better than SATA SSD.

I used to get Bluescreens all the times, but I kinda managed to fix that.

I've heard some users claim, that using a nvme ssd x4 on the acer v5-591g forces some kind of shared lane with the gpu 950m, which would cause Bluescreens as soon as the nvidia gpu drivers are installed. I don't know about that, but its true that the bluescreens stopped for me, when I deaktivated the Nvidia GPU in device manager.

But now, I've found a much better solution. Running the program GPU-Z for some reason prevents the BSOD in my system. I have no Idea why though o_O. I can use the Nvidia GPU now, and I think its not even throttled or anything. As soon as I close GPU-Z, my system crashes in a few seconds.

I used to enter the Advanced Bios options and tried to tweak the Pcie/PEG settings to get some kinda result, but sadly to no avail. Disabling Wifi + Ethernet Root port didn't do anything.

Running The GPU in x4 link width delayed the BSOD but not for that much longer.

I'm sure that some kinda Bios Pcie/PEG tweak could fix the issue, but I'm happy enough with the GPU-Z fix hope that still helps.